Calling dial



July 7, 1931. J. M. LABAUGH ET AL 1,812,964

' CALLING DIAL Filed May 27. 1929 wvmroms J. M. LABAuer/ kfTM/LLER ATTORNEY Patented July 7, 1931 UNITED STATES CALLING DIAL Application filed May 27, 1929. Serial No. 366,446.

This invention relates to instruction card holders for calling dials or impulse senders of the type used in automatic telephone systems.

In calling dials now used, a frame is mounted on the finger wheel of the dial for holding an instruction card in position. On this instruction card is printed among other information the office name and number of the subto scribers telephone line. Owing to the necessity of reassigning oflice names and numbers to the subscribers lines, it is necessary at times to replace these cards by other cards.

The replacement of these cards has been cf- .5 fected by repair men provided with tools to remove the card holders from the finger wheel to give access to the card. This, therefore, necessitates trips to the subscribers premises by the repair men. 7 It is the object of the present invention to provide a construction whereby the subscriber can readily make the change himself, the card being mailed to him, thus avoiding the necessity of these trips.

The card holder of this invention comprises a frame for mounting in a permanent manner an instruction card containing general information printed thereon and for holding another card on which the ofiice name and I number only are printed. The frame for holding the latter card is preferably part of the framefor holding the former and is provided with a slot at one of its ends through which the card containing the exchange and number may be easily inserted or removed by the subscriber without the use of special tools.

In the drawings, Figure 1 is a partial view of a calling dial showing the finger wheel, the combination card holder, cooperating parts and cards in section;

Fig. 2 is an exploded view thereof showlng in more detail the different elements of the device, the parts being shown in perspective;

Fig. 3 is a perspective view of the card holder showing the method of inserting the auxiliary card in its supporting frame; and,

Fig. 4 is a partial perspective viewshowing the relative position of a number of elements with respect to the card holder.

The calling dial to which this invention is particularly well adapted for use, consists of a casing 5, a finger wheel 6, which is mounted on one end of a centrally disposed shaft 7, in turn operatively connected to an impulse mechanism (not shown).

The finger wheel 6 is provided with a plurality of apertures 8 and 9 for mounting a com ination card holder 10 which is in turn adapted to hold a number of cards as shown in Fig. 1. This combination card holder consists of a circular member bent inwardly as shown and a lug 11, which extends upwardly from the outer edge of member 10 engages peripherally disposed notches a a a and a, in the transparent protecting disk 16. the instruction card 17, the resilient supportmg disk 18 and the reenforcing member v19, as shown in Fig. 4. These notches are provlded for readily locating the position of disk 16, the instruction card 17 and the reenforcing disk 18 in the card holder 10.

eenforcing ring 19 is preferably made of a relatively thick sheet of brass and is made to fit tightlyv inside the circular frame 10 through the provision of a slot 20 which renders the ring peripherally resilient and thereby prevents the deformation of the card holder Whichwould otherwise occur due to the tension of its peripherally disposed spring arms and 31 acting against the sides of apertures 8 and 9 in the finger Wheel 6.

The member 19 carries a plurality of spring lugs 21, 22, 23, 24 and 25 which are bent inwardly and extend in engageable relation with the finger wheel6 for pressing the members 16, 17 and 18 collectively against the edgeof the inwardly bent portion of the ring 10 as shown in Fig. 1. The frame 10 carries a pair of parallel and inverted L shaped bars 32, 33 which cooperate with the transparent disk 16 and portions of the ring 10 to form a holder or frame for a card 34 as shown. This card bears only the name of the tele phone exchange to which a particular telephone subscriber is connected and the subscribers number. At the end of this frame there is provided aslot 35 through which the card 34 may easily be inserted in the frame or removed therefrom without the necessity of removing the main card holder 10 from the finger Wheel.

, The apertures Sand 9 in the plate 6 are disposed toregister with th-elugs 30 and 31 which are preferably formed integrally with the holder 10. Aperture 8, in which lug 31 fits, and said lug, are, each vpreferably made,

larger than aperture 9 andlug 30 in order to facilitate the propervlocation of the instruc- 10 tion card'17 with reference to the generaL 7. position of the dial on its mounting stand. The member 19 is provided with two oppositely disposed lugs 36 and 37 which extend laterally therefrom in abutment with the 15 lugs 30 and 31 of the card holder for reenforcing them and thereby securing the card holder more firmly on the finger wheel.

What is claimedis: i

1. Aflcombination cardholder comprising.

20, a main frame and a second frame each adapted to hold a card, and a transparent protecting member for the card mounted in the main frame, means for holding the card and member in said main frame, said member 25 serving as a backing support for the card mounted on the second frame.

2. A combination card holder for use in calling dials comprising a frame adapted to retain a card, a plurality ofrbarsdisposed 0 in parallel relation to each other across said "frame and forming a second frame for another card arranged to be put in place and removed from the second mentioned frame without interference from the first mentioned 35,,card. I s a s 3. A combination card holder for use in calling dials comprising a circular frame and a rectangular shaped frame each adapted to hold a card, and a'transparent protecting ,member for the card mounted in the .cir- V cular frame, means'for holding the card and. member in saidcircular frame, said member serving as a backing; support ffor the card mounted in the rectangular'frame,

45 l. A combination card holder for'use. with calling dials comprising a'frame, a trans parent member and a card mounted in said frame, a device for securing said frame on,

V the dial and holding said card and said mem- 59 her in position in said frame, another frame carried by the first mentionedframe for holding a second card and means in the last mentioned frame for permitting the insertion and theremoval of the second me'ntionedcard 5: from thelastmentioned frame independently of the first mentioned card. a

In testimony whereof, I have signed my nameto thisspecification this21st day of May, 1929. i

- -,JAMES M.-LABAUGH. In testimony whereof, I have signed my nameto this specification this 23rd dayof-Q May, l929.v. I I, vroron EMILLER. 

